java, get set methods

This question has been asked before, but even after reading: Java “Get” and “Set” Methods Java Get/Set method returns null And more I still don’t understand how to solve my problem. When accessing variables in a class using get methods from another class I receive the value null. How do I recieve my correct values … Read more

What does .class mean in Java?

When you write .class after a class name, it references the class literal – java.lang.Class object that represents information about given class. For example, if your class is Print, then Print.class is an object that represents the class Print on runtime. It is the same object that is returned by the getClass() method of any (direct) instance of Print.

Usage of @see in JavaDoc?

Yeah, it is quite vague. You should use it whenever for readers of the documentation of your method it may be useful to also look at some other method. If the documentation of your methodA says “Works like methodB but …”, then you surely should put a link. An alternative to @see would be the inline {@link …} tag: … Read more

Python calling method in class

The first argument of all methods is usually called self. It refers to the instance for which the method is being called. Let’s say you have: Then, doing: There’s nothing special about this being called self, you could do the following: Then, doing: In your specific case: (As suggested in comments MissileDevice.RIGHT could be more appropriate here!) You could declare all … Read more

Does Java support default parameter values?

No, the structure you found is how Java handles it (that is, with overloading instead of default parameters). For constructors, See Effective Java: Programming Language Guide’s Item 1 tip (Consider static factory methods instead of constructors) if the overloading is getting complicated. For other methods, renaming some cases or using a parameter object can help. This is … Read more

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